温度和生物多样性对鸟类和鱼类的社区稳定性有不同的影响
Shyamolina Ghosh1, Blake Matthews2, Owen L Petchey3
1Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland. ghoshshyamolina89@gmail.com.
Nature ecology & evolution
|August 7, 2024
概括
全球变暖影响生物多样性. 极端温度和中位变化影响鱼类和鸟类社区的稳定性,主要是通过对物种多样性和同步性的间接影响.
科学领域:
- 生态生态学 生态生态学
- 气候变化生物学 气候变化生物学
- 生物多样性科学 生物多样性科学
背景情况:
- 社区的稳定对于维护生物多样性和生态系统功能至关重要.
- 全球变暖对生态社区构成了重大挑战.
- 了解温度对社区动态的影响至关重要.
研究的目的:
- 研究四个温度组成部分 (中位数,变化,趋势,极端) 如何影响多样性-同步-稳定性关系.
- 测试有关温度变化对社区同步的稳定作用的假设.
- 为了区分对温带地区鸟类和鱼类群落的影响.
主要方法:
- 分析了来自温带地区的1246个鸟类和580个鱼类群落.
- 检查温度组件与社区稳定性指标 (多样性,同步) 之间的关系.
- 测试特定假设 (H1,H2) 关于温度对物种相互作用和丰度的影响.
主要成果:
- 在鱼群中支持了H1假设 (中位温度效应).
- 在鸟群中支持了H2假设 (极端温度效应).
- 生物体的温度成分主要对社区的稳定性产生间接影响,这种影响是由生物体的多样性和同步性等因素介导的.
结论:
- 温度因素显著影响社区的稳定性,在鱼类和鸟类群体中观察到明显的影响.
- 间接途径,特别是通过多样性和同步性,是将温度与稳定性联系起来的关键机制.
- 为了全面理解,需要考虑温度对陆地和水生生态系统的直接和间接影响.
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